Use the new notification sound. (#4572)

* Use the new notification sound.

* Add a banner informing the user of the new notification sound.

ElementX/Sources/Screens/HomeScreen/HomeScreenModels.swift

@@ -39,6 +39,7 @@ enum HomeScreenViewAction {
     case confirmRecoveryKey
     case resetEncryption
     case skipRecoveryKeyConfirmation
+    case dismissNewSoundBanner
     case updateVisibleItemRange(Range<Int>)
     case globalSearch
     case markRoomAsUnread(roomIdentifier: String)
@@ -92,6 +93,7 @@ struct HomeScreenViewState: BindableState {
     var userAvatarURL: URL?
     
     var securityBannerMode = HomeScreenSecurityBannerMode.none
+    var shouldShowNewSoundBanner = false
     
     var requiresExtraAccountSetup = false
         
@@ -134,6 +136,10 @@ struct HomeScreenViewState: BindableState {
     var shouldShowFilters: Bool {
         !bindings.isSearchFieldFocused && roomListMode == .rooms
     }
+    
+    var shouldShowBanner: Bool {
+        securityBannerMode.isShown || shouldShowNewSoundBanner
+    }
 }
 
 struct HomeScreenViewStateBindings {

ElementX/Sources/Screens/HomeScreen/HomeScreenViewModel.swift

@@ -105,6 +105,12 @@ class HomeScreenViewModel: HomeScreenViewModelType, HomeScreenViewModelProtocol
             }
             .store(in: &cancellables)
         
+        appSettings.$hasSeenNewSoundBanner
+            .sink { [weak self] hasSeenNewSoundBanner in
+                self?.state.shouldShowNewSoundBanner = !hasSeenNewSoundBanner
+            }
+            .store(in: &cancellables)
+        
         userSession.clientProxy.hideInviteAvatarsPublisher
             .removeDuplicates()
             .receive(on: DispatchQueue.main)
@@ -160,6 +166,8 @@ class HomeScreenViewModel: HomeScreenViewModelType, HomeScreenViewModelProtocol
             actionsSubject.send(.presentEncryptionResetScreen)
         case .skipRecoveryKeyConfirmation:
             state.securityBannerMode = .dismissed
+        case .dismissNewSoundBanner:
+            appSettings.hasSeenNewSoundBanner = true
         case .updateVisibleItemRange(let range):
             roomSummaryProvider?.updateVisibleRange(range)
         case .startChat:

ElementX/Sources/Screens/HomeScreen/View/HomeScreenContent.swift

@@ -122,14 +122,16 @@ struct HomeScreenContent: View {
     @ViewBuilder
     private var topSection: some View {
         // An empty VStack causes glitches within the room list
-        if context.viewState.shouldShowFilters || context.viewState.securityBannerMode.isShown {
+        if context.viewState.shouldShowFilters || context.viewState.shouldShowBanner {
             VStack(spacing: 0) {
                 if context.viewState.shouldShowFilters {
                     RoomListFiltersView(state: $context.filtersState)
                 }
-            
+                
                 if case let .show(state) = context.viewState.securityBannerMode {
                     HomeScreenRecoveryKeyConfirmationBanner(state: state, context: context)
+                } else if context.viewState.shouldShowNewSoundBanner {
+                    HomeScreenNewSoundBanner { context.send(viewAction: .dismissNewSoundBanner) }
                 }
             }
             .background(Color.compound.bgCanvasDefault)

ElementX/Sources/Screens/HomeScreen/View/HomeScreenNewSoundBanner.swift

@@ -0,0 +1,59 @@
+//
+// Copyright 2025 New Vector Ltd.
+//
+// SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial
+// Please see LICENSE files in the repository root for full details.
+//
+
+import Compound
+import SwiftUI
+
+struct HomeScreenNewSoundBanner: View {
+    let dismissAction: () -> Void
+    
+    var body: some View {
+        VStack(spacing: 16) {
+            content
+            buttons
+        }
+        .padding(16)
+        .background(Color.compound.bgSubtleSecondary)
+        .cornerRadius(14)
+        .padding(.horizontal, 16)
+    }
+    
+    var content: some View {
+        VStack(alignment: .leading, spacing: 4) {
+            HStack(alignment: .firstTextBaseline, spacing: 16) {
+                Text(L10n.bannerNewSoundTitle)
+                    .font(.compound.bodyLGSemibold)
+                    .foregroundColor(.compound.textPrimary)
+                    .frame(maxWidth: .infinity, alignment: .leading)
+                
+                Button(action: dismissAction) {
+                    Image(systemName: "xmark")
+                        .foregroundColor(.compound.iconSecondary)
+                        .frame(width: 12, height: 12)
+                }
+            }
+            
+            Text(L10n.bannerNewSoundMessage)
+                .font(.compound.bodyMD)
+                .foregroundColor(.compound.textSecondary)
+        }
+    }
+    
+    var buttons: some View {
+        Button(action: dismissAction) {
+            Text(L10n.actionOk)
+                .frame(maxWidth: .infinity)
+        }
+        .buttonStyle(.compound(.primary, size: .medium))
+    }
+}
+
+struct HomeScreenNewSoundBanner_Previews: PreviewProvider, TestablePreview {
+    static var previews: some View {
+        HomeScreenNewSoundBanner { }
+    }
+}